19977888

素因数分解:

$2^5\times 3^1\times 7^2\times {\mathrm{31}}^1\times {\mathrm{137}}^1$

素因数の和:195

約数の個数: 144

約数和(自身を含む): 63431424

約数和(自身を除く): 43453536

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 16, 21, 24, 28, 31, 32, 42, 48, 49, 56, 62, 84, 93, 96, 98, 112, 124, 137, 147, 168, 186, 196, 217, 224, 248, 274, 294, 336, 372, 392, 411, 434, 496, 548, 588, 651, 672, 744, 784, 822, 868, 959, 992, 1096, 1176, 1302, 1488, 1519, 1568, 1644, 1736, 1918, 2192, 2352, 2604, 2877, 2976, 3038, 3288, 3472, 3836, 4247, 4384, 4557, 4704, 5208, 5754, 6076, 6576, 6713, 6944, 7672, 8494, 9114, 10416, 11508, 12152, 12741, 13152, 13426, 15344, 16988, 18228, 20139, 20832, 23016, 24304, 25482, 26852, 29729, 30688, 33976, 36456, 40278, 46032, 48608, 50964, 53704, 59458, 67952, 72912, 80556, 89187, 92064, 101928, 107408, 118916, 135904, 145824, 161112, 178374, 203856, 208103, 214816, 237832, 322224, 356748, 407712, 416206, 475664, 624309, 644448, 713496, 832412, 951328, 1248618, 1426992, 1664824, 2497236, 2853984, 3329648, 4994472, 6659296, 9988944, 19977888]

約数ペア:

[(1, 19977888), (2, 9988944), (3, 6659296), (4, 4994472), (6, 3329648), (7, 2853984), (8, 2497236), (12, 1664824), (14, 1426992), (16, 1248618), (21, 951328), (24, 832412), (28, 713496), (31, 644448), (32, 624309), (42, 475664), (48, 416206), (49, 407712), (56, 356748), (62, 322224), (84, 237832), (93, 214816), (96, 208103), (98, 203856), (112, 178374), (124, 161112), (137, 145824), (147, 135904), (168, 118916), (186, 107408), (196, 101928), (217, 92064), (224, 89187), (248, 80556), (274, 72912), (294, 67952), (336, 59458), (372, 53704), (392, 50964), (411, 48608), (434, 46032), (496, 40278), (548, 36456), (588, 33976), (651, 30688), (672, 29729), (744, 26852), (784, 25482), (822, 24304), (868, 23016), (959, 20832), (992, 20139), (1096, 18228), (1176, 16988), (1302, 15344), (1488, 13426), (1519, 13152), (1568, 12741), (1644, 12152), (1736, 11508), (1918, 10416), (2192, 9114), (2352, 8494), (2604, 7672), (2877, 6944), (2976, 6713), (3038, 6576), (3288, 6076), (3472, 5754), (3836, 5208), (4247, 4704), (4384, 4557)]